[ckan-dev] Conditionally add fields to the add dataset form

[Pieter Colpaert]

Hi CKAN developer's list,

I'm working on http://data.opendataforum.info. Over there we have an 
integration with The DataTank [1], which when the content-type of the 
opendataset is supported by The DataTank, it will automatically also add 
the meta-data to The DataTank. The problem is however that The DataTank 
needs more meta-data fields when a certain format has been chosen. E.g., 
for CSV, this is for instance the location of the header row, or the 
delimiter.

The DataTank publishes these parameters in a JSON file on each The 
DataTank instance. For instance, at 
http://demo.thedatatank.com/discovery you can find a list of all the 
required and optional parameter for each content-type that can be added.

What I'm trying to do in the CKAN The DataTank extension [2] is to add 
fields (see screenshot) when a certain format is chosen. The docs 
however have not been very helpful in explaining how to do this... Any 
help here?

Kind regards,

Pieter

[1] http://thedatatank.com
[2] https://github.com/tdt/ckanext-tdt

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